![photo courtesy of Zachary Gillihan](pdf/Med_Tower_25.jpg) |
![photo courtesy of Zachary Gillihan](pdf/smCadwalader.jpg) |
General Railway Signal Company
N.Y.C. R.R.
Tower 25
July-26-1918 |
General Railway Signal Company
Penn. R.R.
Cadwalader "CA" Tower
April-26-1916 |
![photo courtesy of Zachary Gillihan](pdf/smSpokane.jpg) |
![photo courtesy of Zachary Gillihan](pdf/smScottSt.jpg) |
General Railway Signal Company
Oregon & Washington R.R.
Electric Interlocking Plan at Spokane WA.
December-7-1912 |
General Railway Signal Company
L.V. R.R.
Scott St., Buffalo, N.Y.
March-21-1916 |
![photo courtesy of Zachary Gillihan](pdf/smSladesFerry.jpg) |
![photo courtesy of Zachary Gillihan](pdf/sm3rdfrontst.jpg) |
General Railway Signal Company
Slades Ferry 23552
Track and Signal Plan
N.Y.N.H. & H.Ry.
May-22-1901 |
General Railway Signal Company
Third & Front St. Cincinnati
Track and Signal Plan
C.N.O.&T.P. R.R.
Jan-19-1914 |
![photo courtesy of Zachary Gillihan](pdf/smDundas.jpg) |
![photo courtesy of Zachary Gillihan](pdf/smMusselman.jpg) |
General Railway Signal Company
Dundas, Ohio
Locking Sheet, Dog Chart and Arrangement
Plan for 5 Lever Table Interlocker.
B. & O. R.R. Co.
Sept-22-1936 |
General Railway Signal Company
Musselman, Ohio
Locking Sheet, Dog Chart and Arrangement
Plan for 5 Lever Table Interlocker.
Nov-12-1936 |
![photo courtesy of Zachary Gillihan](pdf/smFrenchtown.jpg) |
![photo courtesy of Zachary Gillihan](pdf/smToronto.jpg) |
General Railway Signal Company
Frenchtown "FN"
Track Plan, Locking Sheet & Dog Chart
Penn. R.R.
April-10-1916 |
General Railway Signal Company
Toronto, Ont.
Track Plan, Locking Sheet & Dog Chart
Toronto Suburban Railway
Feb-7-1910 |
![photo courtesy of Zachary Gillihan](pdf/smeast_buffalo_2.jpg) |
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General Railway Signal Company
Copy From Original Linen
East Buffalo, NY
Dog Chart
D. L. & W. R.R.
Oct-22-1909 |
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